...because Sheldon was wearing
that stupid ROBOT mask.
The Big Bang Theory Season 6, Episode 9
If it's "creepy" to use the Internet,
military satellites and ROBOT aircraft...
The Big Bang Theory Season 2, Episode 7
Forget the ROBOT. What happened to you?
The Big Bang Theory Season 2, Episode 12
...on becoming some sort
of freakish self-aware ROBOT?
The Big Bang Theory Season 4, Episode 2
When I learn that I'm a ROBOT,
will I be able to handle it?
The Big Bang Theory Season 1, Episode 3